Federer recently announced his retirement from the game of tennis.
The star credited his family, especially his kids, for being instrumental to his decade-long success.
He shares two sets of twins, Myla and Charlene, 13, and Lenny and Leo, 8, with his wife, Mirka.
He noted that becoming a first-time parent to his twin girls when he was not winning any significant games helped to shift his focus.
The star athlete noted that a shift in things came after his twin boys were born,
This happened because being on the road every week with four little kids became harder.
Serena Williams, who announced her retirement from tennis before Federer, penned a sweet tribute to him.
The mother-of-one called him an inspiration to herself and many others.
She also discussed her impact on the tennis world and what legacy she would be leaving behind.